Genotyping Single Nucleotide Polymorphisms with Molecular Beacons
...designed to be complementary to each other and can form astem structure, while the intervening loop is complementary to a sequence withinthe amplified product. When the unhybridized probe is in solution, it adopts ahairpin structure that brings the fluorphore and quencher sufficiently close toeach other t...New Yeast Cloning System for Producing Proteins with Native Amino Acid Sequences
...ressed. The pESP-2 vector is supplied in a form ready for LIC cloning, with 12- and 13-nucleotide, single-stranded overhangs. The gene of interest is prepared for PCR amplification and LIC cloning by using primers that include 12- and 13-nucleotide sequences that are comple...Production of Full-Length, Biologically Active MEK1WT and MEK1CA
...ning. Although MEK1 WT canbe expressed in soluble form in E. coli as glutathione-S-transferase(GST) fusions, these products are largely degraded. 2, 7,8 Separatingfull-length protein from degradation products is difficult, presumably becauseof the dimeric nature of the glutathione-S-transferase moiety. ...Cell Proliferation Kit Outperforms the Competition in the Range of Cells Typically Counted
... Since CHO cells are adherent cells and typically form a monolayer, this test demonstrates the mi...ny other common cell lines, such as COS-1, form multiple layers of cells and grow to over 100,000 cells per well in 96-well culture dishes (...Restriction Endonucleases Undergo Rigorous QC Testing to Ensure Optimal Performance
... supercoiled DNA (RF I) to the open circular form (RF II) is monitored by agarose gel electrophoresis ( Figure 2 ). This conversion is indicative of a single nick in the RF I DNA. If greater levels of contamination are present, linear DNA (RF III) might also be observ...RT-PCR Primer Sets for Human and Mouse Mismatch Repair Genes
...mismatch repair. Mismatched base pairs in DNA can form in vivo through processes such asreplication error...proteins. 17 In the current model, hMSH2and hGTBP form a dimer, which recognizes the mismatch and binds to it. Anothercomplex formed by hPMS2 and hMLH1 sub...Simple, Sensitive Isotyping of Mouse Monoclonal Antibodies
...ng antibody will meetthe immunoglobulin sample and form a precipitate. The precipitation line thatoccurs between the sample well and an antiserum well indicates the isotype. Thisassay is inexpensive and simple to use. However, the sensitivity can be low, and12 to 24 hours may be required to obtain results...Greater Amplification Specificity with New Hot Start PCR Enzyme
...aq DNA polymerase is a modified form of Taq2000 DNA polymerase with hot start capability to increase PCR specificity and improve performance. Using SureStart Taq DNA polymerase, hot start is incorporated into PCR protocols previously optimized with Taq DNA ...A New Lambda Vector for Mammalian Expression
...he Lambda ZAP-CMV vector isavailable in undigested form with host strains and helper phage. cDNA Library Construction in the Lambda ZAP -CMV Vector Figure 3 Libraries constructed in the Lambda ZAP-CMV vector are characterized by high titers and robust plaque size. We co...Fluorescence-Based Single-Tube Assays to Rapidly Detect Human Gene Mutations
...ine at aminoacid codon 282, is found in homozygous form in more than 80% of Caucasianpatients suffering from hereditary haemochromatosis. One of the mostcommon human genetic diseases, it characterized by an iron overload thateventually results in tissue damage and death to the patient. The estimatedfreque...Expression and Purification of Recombinant Proteins That Have Native Amino Acid Sequence
...e pCALnEK vector, causing a single-stranded gap to form upon annealing insert to the pCALnEK vector. In order to test the effect of single-stranded gaps on the efficiency of LIC cloning, primers were constructed that would produce 17-nucleotide and 27-nucleotide gaps upon annealing...Gene-Specific Primers for NMDA Receptor Subunits
...t of the NMDAR to be cloned. 2 The NR1 protein can form NMDA-activated ion channels when expressed in Xenopusoocytes, but the currents in such channels are much weaker than those seen insitu. Channels with more relevant physiological characteristics are producedwhen the NR1 subunit is combined with one or...Codon Bias-Adjusted BL21 Derivatives for Protein Expression
...ompared the expression of a codon-adjusted form of the human cardiac troponin-T gene in convention...ith expression of the wild-type (hcTnT-wt) form in BL21-CodonPlus(DE3)-RIL cells. The expression of hcTnT in E. coli was previously shown to...In Vivo Signal Transduction Pathway Reporting Systems
... by overexpression of the MEKK protein. A mutated form of the c-Jun transactivator fusion protein, which had alanine residues substituted for serine 63 and 73 in c-Jun, could not be activated by MEKK (data not shown). In a similar fashion, the specificity of the pFA-Elk1 fusion act...Mammalian and Bacterial Expression in One Vector
...expression vector is offered either in supercoiled form or predigestedwith Eam1104 I. Prokaryotic and Eukaryotic Expression of the Green Fluorescent Protein We chose the green fluorescent protein 5 (GFP) gene as the reporter because its expression can be visualized easily in bacterial ...New Reporter Plasmids for Studying Interferon-Stimulated Signal Transduction Pathways
...characterized frommammalian cells. These STATs can form homo- and heterodimers and bind to verysimilar yet different symmetrical, dyad sequences. 3 When cells arestimulated with IFN- a or IFN- b ,a DNA-binding complex is formed that consists of STAT1, STAT2, and anotherprotein known as p48. This complex...A membrane-lid tube for bacteria cultivation and freeze-drying
...e requirements, save time and money and thus form the ideal prerequisites for increasing sample thro...e control was carried out in parallel in the form of bacteria cultivation in Erlenmeyer flasks. To ensure an identical initial bacteria concentr...A Unique Dimension in Biological Purity
... Pyrogens Pyrogens form a class of substances that cause fever when given parenterally (from Greek: pyr, pyros = fire; genes: to arise). Endotoxins as the most important class of pyrogens are monitored in Eppendorf Biopur products by a kinetic-turbidimetri......upply a non-radioactive alternative in the form of ELISA kits, with anti-hGH antibodies bound to the surface of a microtiter plate. First, the hGH from the supernatant of the culture medium binds to the antibody on the plate. Subsequently, the bound hGH is detected in two s...Genomic DNA Isolation Protocol(1,2,3)
...htly. Mix by shaking vigorously enough to form a homogeneous suspension. Do not vortex. Centrifuge at 1500 x g for 5 minutes to isolate the upper, DNA-containing aqueous phase away from the lower, organic solvent phase. Carefully decant upper phase contain......upply a non-radioactive alternative in the form of ELISA kits, with anti-hGH antibodies bound to the surface of a microtiter plate. First, the hGH from the supernatant of the culture medium binds to the antibody on the plate. Subsequently, the bound hGH is detected in two s...Genomic DNA Isolation Protocol(1,2,3)
...htly. Mix by shaking vigorously enough to form a homogeneous suspension. Do not vortex. Centrifuge at 1500 x g for 5 minutes to isolate the upper, DNA-containing aqueous phase away from the lower, organic solvent phase. Carefully decant upper phase contain...Optimizing electroporation parameters
... cells. Cells which do not assume a rounded form in the electroporation buffer (see Fig. 2 ) often require even higher pulse voltages before optimal transfection can occur. Please note that increasing the pulse voltage can increase the transfection rate but, at the ......gions with high GC content, RNA is able to form stable secondary structures, which abort the cDNA ...randed DNA templates in a PCR reaction can form secondary structures that may interfere with amplification [3,4]. The higher the annealing t...Optimizing DNA Amplification Protocols using the Eppendorf Mastercycler
... DNA sequence and, in addition, be able to form G/C clamps, i.e. several consecutive G/C or C/G base pairs, between the 3' end of the primer and the template DNA (5). Self-complementarity within a primer by virtue of palindromes or long segments of polypurines and p......ines and polypyrimidines that are prone to form secondary structures that inhibit proper primer function. This, coupled with the rarity of total EBV genome in the total cellular DNA extract and the fact that the LMP-1 gene constitutes only 1% of the viral genome, made the t...Using Gradient PCR to determine the optimum annealing temperature.
... For example, unspecific secondary bands may form after the PCR reaction, which hinder, or even prevent, further analyses (cycle sequencing, mutation detection, etc.) or an unequivocal assessment of the PCR result. In such cases, PCR conditions must be optimized. This is normally a...The use of the Mastercycler gradient for single-cell PCR and preimplantation diagnosis
... Preimplantation diagnosis (PGD) is a very early form of prenatal diagnosis: embryos obtained in vitro from couples at risk of contracting genetic disease are analyzed for the presence of this disease and only the embryos which are shown to be free of the disease being tested for......gions with high GC content, RNA is able to form stable secondary structures, which abort the cDNA ...randed DNA templates in a PCR reaction can form secondary structures that may interfere with amplification [3,4]. The higher the annealing t...The QIAGEN Guide to Animal Cell Culture
...enicity. Rodent primary cell cultures form continuous cell lines relatively easily, eit... and require additional genetic manipulation to form a continuous cell line. However, cell cultures derived from human tumors are often immortal. ...The QIAGEN Guide to Animal Cell Culture
...le amino acid that, with time, converts to a form that cannot be used by cells, and should be added to medium just before use. Antibiotics and fungicides can be used as a supplement to aseptic technique to prevent microbial contamination. The working concentration of commonly used ...BioRobot MDx standardize your automated protocols in clinical laboratories
...s with endogenous cellular proteins to form a proteinRNA complex known as the RNA induced silencing complex (RISC). Due to the sequence homology between the siRNA and the target mRNA, the RISC specifically targets the mRNA for enzymatic degradation (see flow...... HotStarTaq DNA Polymerase, a modified form of QIAGEN Taq DNA Polymerase. HotStarTaq DNA Polym... HotStarTaq DNA Polymerase is a modified form of a recombinant 94 kDa DNA polymerase, originally isolated from ...... HotStarTaq DNA Polymerase is a modified form of the recombinant 94 kDa Taq DNA Poly... HotStarTaq DNA Polymerase is a modified form of a recombinant 94-kDa DNA polymerase, originally isolated from Thermus aquaticus, clon...TransMessenger Transfection Reagent
...RNA-condensing enhancer and an optimized buffer to form siRNA-TransMessenger Reagent complexes that are efficiently transferred into eukaryotic cells. Strict quality control is performed to test for absence of RNase activity, lot-to-lot consistency, and low endotoxin levels (=10 EU/ml). ...Custom and library siRNA for efficient gene silencing
...teracts with endogenous cellular proteins to form a proteinRNA complex known as the RNA induced silencing complex (RISC). Due to the sequence homology between the siRNA and the target mRNA, the RISC specifically targets the mRNA for enzymatic degradation (see flowchart). ...... (purple balls) interacts with DNA (black) to form a ring-like (toroid-like) structure. The upper right section of the illustration shows naked DNA, the lower section shows the interaction between dendrimers and DNA inside the complex, and the upper left section sh...SuperFect Transfection Reagent
... (purple balls) interacts with DNA (black) to form a ring-like (toroid-like) structure. The upper right section of the illustration shows naked DNA, the lower section shows the interaction between dendrimers and DNA inside the complex, and the upper left section sh...Successful PCR amplification and subcloning of a GC-rich DNA fragment
...ytidine base pairs (GC-rich sequences) can form robust secondary structures that resist denaturation and prevent annealing of PCR primers. PCR was performed using HotStarTaq DNA Polymerase and 4 other commercially available DNA polymerases. Of the 5 polymerases tes...Transfection Reagent Selector Kit Handbook
... the study or easily distinguished from the native form of the gene. Second, the assay for the reporter gene product should be quick, easy, sensitive, and inexpensive. In particular, a broad linear range is important to enable detection of both small and large changes in the reporter gen...TransMessenger Transfection Reagent
...RNA-condensing enhancer and an optimized buffer to form siRNA-TransMessenger Reagent complexes that are efficiently transferred into eukaryotic cells. Strict quality control is performed to test for absence of RNase activity, lot-to-lot consistency, and low endotoxin levels (=10 EU/ml). ......y bind to a multi-protein complex to form an RNA-induced silencing complex (RISC). The siRNA-protein complex targets endogenous mRNA whose sequence matches that of the siRNA. The RISC nuclease activity then cleaves the mRNAsiRNA duplex resulting in s......have m/z values corresponding to an oxidized form of T 12 . This peptide is of particular interest because it contains two possible oxidation sites, Met 109 and Met 124 . Figure 1. Base peak mass spectrum of tryptic fragments of oxidized CaM separated o...Structural Analysis of Glycosylated Peptides in Complex Mixtures with Ion Trap MSn
...e, TurboSEQUEST was able to identify the 211 form of the T45 peptide (211-T45) at a retention time of 15.57 minutes. As would be expected from such a complex mixture, a number of co-eluting ions were observed. However, the triply-charged 211-T45 ion at m/z 1064 was easily identifie...Characterization of Protein Oligosaccharides Using MSn
...ides, six unique monosaccharidescan be arranged to form many millions ofoligosaccharides. Though much is understood aboutcarbohydrate biosynthesis to eliminate most of theseisomers from consideration, the permutations thatremain still provide a formidable analytical problem. Electrospray ionization tande...C. therm. Polymerase One-Step RT-PCR System
... by Roche Applied Science is the recombinant form of the DNA polymerase from the thermophilic eubacterium Carboxydothermus hydrogenoformans, expressed in E. coli. The recombinant enzyme lacks the 5'3' exonuclease domain (RNase H activity) of the native enzyme. The system also conta......art Taq DNA Polymerase is a thermostable, modified form of recombinant Taq DNA Polymerase. It is i...on-specific primer-template hybrids that may form at those temperatures. FastStart Taq DNA Polymerase delivers superior results if used for: ...C. therm. Polymerase for Reverse Transcription in Two-Step RT-PCR
... by Roche Applied Science is the recombinant form of the DNA polymerase from the thermophilic eubacterium Carboxydothermus hydrogenoformans, expressed in E. coli. The recombinant enzyme lacks the 5'3' exonuclease domain (RNase H activity) of the native enzyme. Applicat...Thermal Cycling Profile for Standard PCR
...ll increase dramatically. Primer-dimers will form if the primers have one or more complementary bases so that base pairing between the 3' ends of the two primers can occur. Primer extension For fragments up to 3 kb, primer extension is normally carried out at ...Uses and Applications of FuGENE 6 Transfection Reagent
... Let the FuGENE 6 Reagent/DNA complex form at least 15 minutes at room temperature. In s...he transfection rate increases as the time to form the complex increases up to two hours. A suboptimal FuGENE 6 vs. DNA ratio was used Tran......ongate nonspecific primer-templatehybrids that may form during PCR setup. After activationvia a two-minute incubation step at 95C, the processivityof FastStart Taq DNA Polymerase, and the abilityof the proofreading protein to recognize and exciseincorrectly incorporated nucleotides, combine to providehot-...PCR-Grade Nucleotides Larger Pack Sizes Now Available
...ates (ddNTPs)are now offered in a sequencing-grade form the highestpossible quality available. Sequencing... contamination. Tetraphosphate can disintegrateand form pyrophosphate, which is a knowninhibitor of amplification reactions. Therefore, thenucleotide purity...Quantitation of the Protein MIA as a Marker for Chondrocytes in Research Samples
...osely parallel the capability of melanoma cells to form metastasesin syngeneic animals. Recently, MIA-deficient mice were shown to have structuralabnormalities in cartilage [5]. Materials and Methods Cell culture Human primary chondrocyte......r electroporation,which uses high voltagepulses to form transient pores inthe cell membrane through whichthe DNA can enter. Currently, themost widely used method fortransfecting cells is with cationiclipids that result in very hightransfection efficiencies with lowcytotoxicity. In order to determin......col.The formula calculating gene expression in the form of molecules/106 molecules was incorporatedin an MS Excel file. Eachgene was measured with eachmethod. Genes measured by allthree methods in figure 1 are -actin, CDC2, E2F1, E2F4, p18 andTNF receptor. No statistically significantdifferences between v......idualcancer cells may attach in distantregions and form colonies as aninitial step of metastasis formation.Hence, early detection of metastaticpotential can be estimated bydetecting tumor cells in the bloodcirculation. Sensitivity and specificityare the main objectives of anymethod applied for this purpos...Mutation detection for the K- rasand P16 genes
... a clinical trial for a peptidevaccine. The normal form ofcodon 12 codes for glycine.Known mutations observed atcodon 12 are: aspartic acid, valine,serine, cysteine, alanine, arginine,and asparagine. The PCR primerschosen amplified an initialproduct of 157 base pairs. The forward primer had a mism......ulting RNA transcript is expected to fold back and form a stem-loop structure comprising a 19 bp stem and 9 nt loop with 2-3 U's at the 3' end (Figure 1)....Protocol for GenomePlex Whole Genome Amplification from Plant
...oughly mix by vortexing. A white precipitate will form upon the addition of Lysis Solution Part B. Incubate the mixture at 65 C for 10 minutes with occasional inversion to dissolve the precipitate. Add 130 l of Precipitation Solution, mix by inversion, and place the sample on ice for 5 minutes. Cent...... anion-exchange-based systems. Endotoxins can also form large aggregatesresulting in co-purification in size exclusion columns and cesium chloride density gradients.Therefore, both standard and traditional plasmid purification systems can result in high levels ofendotoxin contaminating the purified plasmi...